toys sold in the united states, so regardless of where the manufacturer is, if they're sold in the u.s., they have to comply with those standards, other countries could well have different laws on their shelves and my guess would be vary from laws that would be more health protective to less he fighters to join us. >> i have two questions, i'll keep them brief. we can't control where our fire houses are and our fire house is a block off the freeway, we do replace our h fact filters every five mother and is they're jet black when we replace them every three months, it is a big concern, how do we reduce our exposure when we're a block right off the freeway, we're bumper to bump traffic, and there are some fire houses that are literally underneath the freeway so how do we reduce that exposure, air filters, if so, what kind of air filters? >> you're getting beyond our technical knowledge of our filtration, but you know, it might be somebody to consult with somebody with expertise in air filtration for indoor air of course, maybe replacing those filters more often, you know, some very basic